Free Advanced Grammar Exercise: Dependent Prepositions

For each sentence, choose the best word or phrase to complete the gap from the choices below.

Villagers spent two days prepapring their homes the heavy rains and the likelihood of more flooding.
I'm afraid I'm going to find it very hard to choose the two candidates. They are both of a very high calibre.
Frequent use of computer games could be as high as eighty per cent sixteen to twenty-five-year-olds.
The school's computer system is highly vulnerable attack from people outside trying to gain access to sensitive data.
I was very impressed with our telecom provider. They sent a long and detailed letter response to our recent complaints.
There have been improvements in exam results the board in all secondary schools throughout the country.
He studied at Harvard University for three years, gaining a qualification management and finance.
There should be major changes to the way passports are issued and checked the next three to four years.
It is now possible to obtain liquified gas and varoius bio-fuels an alternative to conventional petrol and diesel at many UK petrol stations.
The demand people with manual trade skills such as carpentry and plumbing has recently risen greatly in the UK.
Even though reports of robberies have risen by thirty percent, police arrests of robbers are an all-time low.
Senior politicians in all parties are calling an end to the way many rich people can avoid paying taxes by spending part of the year out of the country.

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